PLATTSBURG, Mo. (AP) – Charges against a northwest Missouri man have been upgraded to involuntary manslaughter after a passenger in his car died from injuries he suffered in an accident last October.

Fifty-eight-year-old Donald L. Mick Jr. of Plattsburg also was charged Tuesday with driving while intoxicated in the death of 48-year-old Jeremy Cheesman.

The Missouri State Highway Patrol says Cheesman was injured in an accident Oct. 9.

Chessman died April 19 under hospice care in Liberty.

Investigators say Mick’s truck went off a road north of Plattsburg.  State troopers found Mick’s blood-alcohol content was .173 after the accident.